Hey, just a quick question relating to the tube/diode switch for the rectifiers on the back of a Dual Rec. Is it safe to switch between tube/diode rectifiers during normal operation of the amp? I ask because I have a small tube combo that has a wattage selector switch that changes between a triode and a pentode. The manual says that this wattage selector should only be changed while the amp is off. I was just curious to see if switching between the tube/diode rectifiers is anything like that. I guess I'm curious about the spongy/bold power switch as well. Basically same question with that. Can you change it while the amp is running without risk of any sort of damage to the amp? Thanks